Osbornodon

Osbornodon ("Osborn's tooth") is an extinct genus of canid that were endemic to North America and which lived from the Oligocene to the Early Miocene, 33.9—15.97 Ma (AEO), existing for approximately 18 million years. It was the last surviving genus of the hesperocyonine subfamily, the oldest subfamily of canids. The genus is named for Henry Fairfield Osborn.

Seven known species of Osbornodon existed:

The earlier species were about the size of a small fox, and had teeth suggesting an omnivorous or hypocarnivorous diet. Later species were larger and more actively predaceous. The last species, O. fricki, was about the size of a large wolf.